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Re: battery polarity
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Posted by Gary Schafer on February 13, 2006 at 08:01:05 from (71.57.149.211):
In Reply to: battery polarity posted by SKane on February 13, 2006 at 04:06:28:
Which polarity probably doesn�t make too much difference. If you have a generator it needs to be polarized the way you have the battery. The regulator will probably have to be polarized too or it may not work. As to the flow of electrons is concerned, they do go from negative to positive. The hole theory as someone mentioned has to do with semiconductor material IE transistors.
The newer theory being taught now is that ENERGY flows from positive to negative. That is how most newer engineers will look at the situation. Nothing has changed as electrons still move from positive to negative. It is all to do with how one views the problem. It is often easier to view the energy flow from positive to negative in a circuit. By the way electrons don�t move through material at a very high speed, they are actually pretty slow moving. The energy itself does move near the speed of light. Most people think the electrons move at the speed of light but they do not. They bump into other electrons in the material and cause those to move and so on.
You may remember the demonstration of six or eight solid balls hanging from strings and each ball touching one another. Striking the first ball does not cause all to move but only the last one in line. That is similar to what happens with electricity in a wire. It does make some difference in the ignition system as to how polarity is set up. The spark from the coil should be negative in polarity as it will arc slightly easier if it is. So the coil connection should be observed at its primary. As far as points arcing and building up deposits, that is a function of the condenser across them. Too much capacitance and the metal (buildup) will move to one side. Too little capacitance and the metal will move to the other side. As far as any galvanic corrosion and polarity is concerned, that would depend on the type of metal on each side of a joint. Regards
Gary
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